1.191
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0.947
IF
15
MNiSW
149.8
ICV
ORIGINAL PAPER
 
CC BY-NC 3.0 Polska
 
 

Respiratory parameters at varied altitudes in intermittent mining work

Alessandro Bacaloni 1  ,  
 
1
Sapienza University of Rome, Rome, Italy (Department of Chemistry)
2
Catholic University of Santiago, Santiago, Chile (Department of Industries (DUOC))
3
Sapienza University of Rome, Rome, Italy (Department of Anatomy, Histology, Medical-Legal and the Orthopaedics, Unit of Occupational Medicine)
4
Sapienza University of Rome, Rome, Italy (Laboratory of Respiratory Pathophysiology, Department of Public Health and Infectious Diseases)
Int J Occup Med Environ Health 2018;31(2):129–138
KEYWORDS:
TOPICS:
ABSTRACT:
Objectives: Workers in the mining industry in altitude are subjected to several risk factors, e.g., airborne silica and low barometric pressure. The aim of this study has been to assess the risks for this work category, evaluating single risk factors as airborne silica, altitude and work shift, and relating them with cardiovascular and ventilatory parameters. Material and Methods: Healthy miners employed in a mining company, Chile, working at varied altitudes, and subjected to unusual work shifts, were evaluated. Cardiovascular and respiratory parameters were investigated. Exposure to airborne silica was evaluated and compared to currently binding exposure limits. Results: At varied altitudes and work shifts, alterations emerged in haemoglobin, ventilation and respiratory parameters, related to employment duration, due to compensatory mechanisms for hypoxia. Haemoglobin increased with altitude, saturation fell down under 90% in the highest mines. The multiple linear regression analysis showed a direct relationship, in the higher mine, between years of exposure to altitude and increased forced vital capacity percent (FVC%), and forced expiratory volume in 1 s (FEV1). An inverse relationship emerged between forced vital capacity (FVC) and years of exposure to airborne silica. In the workplace Mina Subterrànea (MT-3600), statistically significant inverse relationship emerged between the Tiffeneau index and body weight. Conclusions: The working conditions in the mining industry in altitude appeared to be potentially pathogenic; further investigations should be realized integrating risk assessment protocols even in consideration of their undeniable unconventionality. Int J Occup Med Environ Health 2018;31(2):129–138
CORRESPONDING AUTHOR:
Alessandro Bacaloni   
Sapienza University of Rome, Department of Chemistry, Piazzale Aldo Moro 5, 00185 Rome, Italy
eISSN:1896-494X
ISSN:1232-1087